Process of producing sulfur and sulfates.



sewers"? CHRISTIAN HANSEN, 0F LEVERKUSEN, COLOGNE, GER-MANY, ASSIGNOR TO FARBENFA'BRIKEN VORM. FRIEDR, BAYER- e: (10., OF ELBERFELD, GERMANY, A

CORPORATION OF GERMANY.

PROCESS OF PRODUCING SULFUR AND SULFATES.

No Drawing.

Specification of Letters Patent.

Patented July 7, 1914.

To (/77 who: it may (mu urn Be it known that l, Cnuis'rux l'lxnsnx,

doctor of philosophy, chemist, citizen of the German Empire, residing at Leverkusen, near Cologne-on-the-Rhinc, Germany, have invented new and useful Improvements in Processes of Producing Sulfur and Sulfates, of which the following is a specification.

I have found that sulfur and sulfates can be obtained by heating with polythionates solutions containing sultites, bisultitcs, or mixtures of these compounds with or without thiosulfates. The reactions proceed e. .g. according to the following equations:

In order to illustrate the new process m re fully the following examples are given, the parts being by Weight:

Example 1: A solution containing 100 parts of sodium tetinthioruite T? arts of sodium bisuh'ite and 140 parts of sodium sulfite heated to boiling. Sulfur separates.

ilhen the reaction is ".plcte the resulting produc sulfate and sulfur. U11 using solutio s ,cii already cozuam wolythioion of these p oducts is superabout tetiathi or 90 or a mixture osulfate no ."10 parts cf out 100C. begins after complete Within sodium sulfate, which compr s 3. The process for producing: sulfur and sulfates, which comprises heating solutions of a bisulfite with a polythionate, substantially as described.

4. The process for producing sulfur and sulfates, which comprises heating solutions of a bisulfite With a polythionate and a thiosulfate. substantially as described.

The process for producing sulfur and sulfates, which comprises heating solutions of a mixture of a sulfit unda bisultite with a polythionate substantially as described.

6. The process for producing sulfur and sulfates, which comprises heating solutions of a mixture of a sulfite and a hisultitewith a polythionste and a thiosulfate substanti lly es ilesi'rriltcd.

T. The process for producing sulfur and sodium sulfate, which comprises heating olutions of sodium-sullite with l polythionatc, substantislh as described.

8. The 3 sodium sulfate lutions o sodiun':

d a thiosulfatc.

{L The process 1 sodium sulfate, which com lutions of sodium hisulfite note substantially as descr' ill. The process for producing lKI 21' Sill! and s heating; so-

a polytniosulfur and heating solutions of sodium hisulfite u'itl polythionuts and a ti: scribed.

11. The sodium 5 lutioru bisi s process for producing sulfur and sodium sulfate, which comprises heating so lutions of u mixture of sodium sulfite and bisulfite sodium with a. polythionate and a thiosul substantially as described.

In testimony whereof l have hereunto set my hand in the presence of two subscribing Witnesses.

CHRISTIAN lllliSlGL'.

Vitnesses:

IluLuN Norma, 'Anincn'r Nut-12R. 

